题目

多项式 的各项分别是（） A . B . C . D . 答案：B1.I was making model planeswhen my mother came back.（对画线部分提问）_______ _______ _______ _______ when your mother came back?2.I think classical music is boring.（改为否定句）I _______ _______ classical music is boring.3.My mother was doing the dishes at that time.（同义句转换）My mother was _______ the _______ at that time.4.He read a story-book last night.（改为过去进行时）He _______ _______ a story-book at eight o’clock last night.5.He wasn’t old enough to go to school. (同义句转换)He was _______ young_______ go to school.